Hard at work: During the day she promoted the film The Call at Copacabana Palace

Strike a pose: She has been drumming up a buzz for the flick in South America

She has been in South America for two days now on promotional duties for her new thriller.

Meanwhile, Halle has said that she hopes to continue working throughout her pregnancy.

The star - who recently admitted that finding out she is expecting her second child - was the 'biggest surprise' she ever received - is more relaxed this time round and is also eager to maintain her busy schedule after her baby arrives.

Perfection: Halle rocked almost the same ensemble as she wore later in the evening

She told E! News: 'Well, one thing is for sure: I better keep working! With another baby on the way, Mama cannot take time off!

'I think that when I had my first child, my daughter, I took off a good four years because it was something new to me. It was my first time, it was something I tried really hard to do...This time, when I have the baby, I'll keep walking!'

Halle has five-year-old daughter Nahla with her ex-boyfriend French model Gabriel Aubry.

Showing: Halle is reportedly early into her second trimester of pregnancy

Last week it was announced that Halle Berry is pregnant with her first child with dreamy fiancé, actor Olivier Martinez. While we're happy for Halle, but what does this mean for "X-Men: Days Of Future Past?" Halle Berry says her pregnancy will not prevent her from reprising her role as Storm in Bryan Singer's "Days Of Future Past" but it will affect the way the film is shot. According to the BBC, Berry said, "mama cannot take time off" and still plans to storm up the big screen, but that the movie will be shot around the baby bump. Although the actress says the script would not be changed in any way, she also hinted that Storm won't be engaging in anything too intense, saying, "Storm probably won't be as badass as she was going to be because we won't be able to do any fighting or flying or things like that." So does this mean we can expect a toned-down version of Storm? It's possible. Halle also told reporters Storm will be "different than we originally planned her to be but I still think she'll be an integral part of this new X-Men movie." The next installment of X-Men is currently in pre-production, and is scheduled for release on July 18, 2014. What do you guys think about this news? And do you think it's going to change the X-Men movie you were looking forward to? I'm glad to see Halle Berry back as storm and if anyone pull this off, it's her, but share your thoughts below and subscribe to Clevver Movies for more updates! I'm Erin Darling, and thanks for watching!

As she floated down the red carpet, her burgeoning belly was in full view in the gown, which was fitted at the bust and flowed out into a long train.

Sweet treat: On Tuesday it appeared as though Halle's pregnancy cravings had kicked in as she was seen snacking on ice cream as she did a spot of shopping in Palermo, Argentina

And the proud mother-to-be drew even more attention to her pregnancy figure by cradling her tummy as she posed for pictures.

Speaking about her pregnancy the star recently said: 'This has been the biggest surprise of my life, to tell you the truth. Thought I was kind of past the point where this could be a reality for me. So it's been a big surprise and the most wonderful.'

When asked to confirm if she was expecting a boy, she said: 'I don't know, I don't know. But [the baby is] healthy!'

Pregnant and proud: Halle cradled her baby bump on the red carpet in Argentina on Monday night

Pretty in purple: The star was proud to show off her prominent baby bump in a stunning one-shouldered gown

As she floated down the red carpet, her burgeoning belly was in full view in the gown, which was fitted at the bust and flowed out into a long train.

And the proud mother-to-be drew even more attention to her pregnancy figure by cradling her tummy as she posed for pictures.

On business: Halle had been in Buenos Aires to promote her new movie The Call

Making moves: Halle and her crew enjoyed their afternoon of shopping and ice cream before heading off

Halle already appears to be benefitting from that pregnancy glow - her skin looking flawless with her smokey eyes.

A pair of stunning diamond drop earrings completed her elegant look.

Speaking avout her pregnancy the starsaid: 'This has been the biggest surprise of my life, to tell you the truth. Thought I was kind of past the point where this could be a reality for me. So it's been a big surprise and the most wonderful.'

When asked to confirm if she was expecting a boy, she said: 'I don't know, I don't know. But [the baby is] healthy!'

Bumpalicious: Halle Berry pats her growing baby bump in a purple gown at her Buenos Aires hotel on Monday